According to the report^ by Haagensen on an exhibit for the graduate fortnight on ' Tumours ’ at the New York Academy of Medicine, October 1932, the first proven cure of a cancer patient by X-ray treatment was in June 1899 by Tage Sjögren in Sweden. There was, however, a second successfully treated case at the same time, by Tor Stenbeck, and both were reported at the Swedish Society of Medicine meeting on December 19th 1899^ . Elis Berven^ presented these two cases at the 1961 annual meeting of the Radiological Society of North America: Figure [18.lA ] shows the patient of Stenbeck with a basal cell carcinoma of the nose in 1899 before treatment and at 30 years after treatment. Figure [18.IB ] shows Sjögren’s patient with a squamous cell carcinoma of the cheek in 1899, which was cured by X-rays and a minor operation for removal of a small remnant, and at two and a half years after treatment. The apparatus of Stenbeck is shown in [18.2].